Table 3.

Univariable and Multivariable Predictors of the Outcome Events

Parameter	Univariable Analysis			Multivariable Analysis (Full Model)			Multivariable Analysis (After Stepwise Elimination)
	HR	95% Cl	P Value	Adjusted HR	95% Cl	Adjusted P Value	Adjusted HR	95% Cl	Adjusted P Value
Myocardial contraction fraction (per 10% increase)	0.45	0.26–0.79	.005	0.47	0.18–1.24	.13	0.50	0.28–0.90	.02
Systolic blood pressure (per 10 mm Hg increase)	0.61	0.44–0.86	.004	0.69	0.44–1.06	.09	*
Persistent atrial fibrillation	11.9	4.6–31.0	<.001	1.80	0.39–8.4	.45	*
Ventricular fibrillation or sustained ventricular tachycardia	6.8	2.2–20.7	<.001	4.7	1.17–18.9	.03	*
New York Heart Association functional class ≥3	6.9	2.4–19.3	<.001	4.8	1.25–18.4	.02	7.7	2.3–26.0	.001
Relative wall thickness (per 0.1 increase)	1.18	1.03–1.36	.02	1.002	0.70–1.43	.99	*
Maximum LVOT gradient (per 10 mm Hg increase)	0.79	0.66–0.96	.02	0.80	0.65–0.99	.04	0.78	0.66–0.93	.005
History of unexplained syncope	3.7	1.46–9.4	.006	1.86	0.49–7.0	.36	*

Only variables with significant association with the outcome events in the univariable analysis are shown. Cl, confidence interval; HR, hazard ratio; LVOT, left ventricular outflow tract.

^*Eliminated through the stepwise elimination method.